Spatial Graph Coupling for Wireless Communications

提出了一种新的多端信道信息传输方法。在该方法中，以多个独立数据流的形式传输信息，该多个独立数据流在无线信道中耦合成可以使用低复杂度迭代接收器解码的结构，从而允许简单的实现。我们的最新结果证明，即使在等速率和等功率传输的情况下，所提出的技术也达到了高斯多址信道的容量，为信号的联合译码提供了一种几乎通用的方法。该项目的目的是利用新的调制格式来建立用于在多终端信道上通信的实用算法，其中一组终端利用协调和协作来与另一组终端通信以发送和接收信号。终端协作提供了大幅增加网络吞吐量的可能性，而不完全依赖于昂贵的带宽和功率资源。

A novel approach to information transmission over multi-terminal channels is proposed. In this approach, the information is transmitted in the form of multiple independent data streams that couple in the wireless channel into structures that can be decoded using a low-complexity iterative receiver allowing for a simple implementation. Our recent results prove that the proposed technique achieves the capacity of the Gaussian multiple-access channel even for the case of equal rate and power transmissions providing a nearly universal way for joint decoding of signals. The objective of the project is to utilize the novel modulation format to establish practical algorithms for communication over multi-terminal channels in which a group of terminals communicates to another group of terminals utilizing coordination and cooperation for transmission and reception of signals. Terminal cooperation provides a possibility to substantially increase network throughput without relying exclusively on the costly bandwidth and power resources.